Eailwat fkog



1E'. W. SNOW.

RAILWAY FROG.

(No Model.)

Patented May 12, 1885.

UNITED STATES PATENT OFFICE.

FRED. XV. SNOV, OF HILLBURN, NEV YORK.

RA l LWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 317,589, dated May 12, 1885i Application filed December D, 1884. (No model.)`

To all whom it may concern.-

. Be it known that l, FRED. W. SNOW, a citizen of the United States, residing at Hillburn, in the county of Rockland and State of New York, have invented certain new and useful Improvements in Railway-Frogs, of which the following is a specification.

My invention relates to that class of railwayfrogs in which filling-blocks are clamped between the bent ends of yokes and the sides of the divergng wing-rails; and-my invention consists in constructing the wing-rails and blocks so as to permit the latter to have a vertical play without any lateral movement, thereby permitting them to accommodate themselves to the wing-rails and to maintain the yokes at right angles to the central line of the frog.

My invention further relates to certain im.- proved devices for securing the parts in place after adjustment.

In the accompanying drawings, Figure l is a plan view of a railway-frog showing my improvements. Fig. 2 is a sectional plan view. Fig. 3 is a cross-section on the line l 2, Fig. 2. Fig. 4 is a cross-section on the line 3 4c, Fig. 2.

A A are the rails which together form the point of a frog, any usual or suitable means being employed for connecting them in proper relative position.

B B are the wing-rails, bent to the curves required by the angle of the frog-points, and C C are space-blocks interposed between the point-rails and wing-rails, and fitting nicely to the sides thereof, the whole being bolted together in any suitable manner.

D D are the yokes, each of which consists of a strip extending beneath the rails of the frog and bent upward at the ends, each bent end a having an internal recess, e, adapted to receive a vertically-rounded projection, i, upon the end of a filling-block, E, adapted to the outside of the wing-rail, and to fit snugly within the bent ends a of the yoke, as shown, this construction permitting the filling-block to swing in the recess e as a socket, so that its inner end may move vertically, while all horizontal vibration is prevented. The yokes and filling-blocks E are applied to the wing-rails at the point where the latter are nearest together, and are then carried toward the wider portion of the frog until the blocks E are forcibly clamped between the sides of the rails and the bent ends of the yokes, as shown in the drawings, the construction described permitting the blocks to accommodate themselves to the rails so as to take iirm seats thereon, but preventing any vibration of the yokes, so that the latter are maintained absolutely'at right angles to the central line, x, of the frog.

Any suitable means may be employed for locking the parts in their position after adjustment. For instance, a key-rod having a bent end adapted to one of the wing-rails may be applied thereto before the yoke and blocks are adjusted to position, and may be afterward bent up at the ends, so as to hold the parts in place, as shown in Fig. 2. I prefer, however, in some cases to use locking spring-plates F,

which yield to permit the blocks to pass over 1. The combination, with a frog having external diverging wing-rails, of yokes having bent-up ends and filling-blocks adapted to the external sides of the wing-rails, the said bent ends of the yokes being provided with a recess and the filling-blocks with vertically-rounded projections corresponding to said recesses, whereby the blocks may lnove vertically but not horizontally in the yokes, as set forth.

2. The combination, vwith a frog having external diverging wing-rails, of yokes having bent ends and filling-blocks adapted to the external sides of the wing-rails, the ends of the yokes being recessed vertically, andthe ii1lingblocks having rounded projections corresponding to said recesses, and locking de- ICO vices, substantially as described, for holding the blocks in position after adjustment, es set forth.

3. The combination, in a. frog, of yokes, blocks fitting between the ends of the yokes and the wing-rails, and provided with inolined shouldered faces, and spring-plates secured to the rails in position to engage with said faces, for the purpose set forth.

4. The combination, with a frog, of diverg ing Wing-rails, yokes having bent ends and recesses, illing-pieces with projections adapted to said recesses, and spring looking-plates arranged to permit the adjustment of the blocks and to hold the saine in position after 15 adjustment, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRED. W. SNOW.

Witnesses:

A. XV. VRIGHT, R. J. DAvIDsoN. 

